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Urban Camouflage for Reptiles: "I basically thought about how turtles have camouflage that doesn't really work very well for them in the urban environments they often live in these days," Keats said. "So my thought was, can we go to our military and look at urban warfare as inspiration." Jonathon Keats hide caption

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Jonathon Keats

Artist's Exhibit Borrows Human Tech To Solve Nature's Manmade Problems

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Would having to wait 25 seconds for your snack prompt you to make healthier choices at the vending machine? New research suggests the answer is yes. M. Spencer Green/AP hide caption

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M. Spencer Green/AP

A well-regarded intensive care doctor in Virginia says he has had good success in treating 150 sepsis patients with a mix of IV corticosteroids, vitamin C and vitamin B, along with careful management of fluids. Other doctors want more proof — the sort that comes only via more rigorous tests. Sukiyashi/Getty Images/iStockphoto hide caption

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Sukiyashi/Getty Images/iStockphoto

Why The Newly Proposed Sepsis Treatment Needs More Study

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A Tasmanian tiger in captivity, circa 1930. It is believed that the last wild thylacine was shot in 1930 and the last captive one died in 1936. Topical Press Agency/Getty Images hide caption

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Topical Press Agency/Getty Images

Back From The Dead? Reported Sightings Fuel Hope For Return Of Tasmanian Tigers

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In its prime, the Hero sailed through frigid temperatures and ice-strewn waters in the South Pole. But now it's sinking, leaking oil and threatening Washington's oysters. Molly Solomon/Oregon Public Broadcasting hide caption

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Molly Solomon/Oregon Public Broadcasting

EPA Says It Will Allow Continued Sale Of Controversial Pesticide

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Fewer Zika-Linked Birth Defects Than Expected

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The levees below the Oroville Dam were damaged by heavy floodwaters this winter and many need repairs. Lauren Sommer/KQED hide caption

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Lauren Sommer/KQED

Where Levees Fail In California, Nature Can Step In To Nurture Rivers

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This photo, made available by SpaceX Thursday, shows the company's Falcon 9 rocket launching from Kennedy Space Center's historic Pad 39A in Cape Canaveral, Fla. SpaceX hide caption

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SpaceX

SpaceX Reuses A Rocket To Launch A Satellite

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Eddie Salmeron of the California Ghetto Carping club holds the 50-pound carp he caught in Los Angeles' MacArthur Park. Eddie Salmeron hide caption

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Eddie Salmeron

Fishermen Catch 50-Pound Carp In The Middle Of Los Angeles

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Pesticide warning sign in an orange grove. The sign, in English and Spanish, warns that the pesticide chlorpyrifos, or Lorsban, has been applied to these orange trees. Jim West/Science Source hide caption

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Jim West/Science Source

EPA Decides Not To Ban A Pesticide, Despite Its Own Evidence Of Risk

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Vials of the HPV vaccination drug Gardasil. Doctors and public health experts say the new version of the vaccine could protect more people against cancer. Matthew Busch for The Washington Post/Getty Images hide caption

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Matthew Busch for The Washington Post/Getty Images